Drain-pipe.



J. G. HAYES.

DRAIN PIPE.

APPLICATION FILED rmmz, 1912.

PVITNESS :S

THE NURRIS F'EfEfS CO.. PHOTO-LITIIO., WASHNGIN. UV C emmen; sra'rnsNieainnr onirica.

JOSEPH (BnI-IAYES,` 0F INDIANAPOLIS, INDIANA, ASSIGNOR T0 HAYESBROTHERS, 0F

INDIANAPOLIS, INDIANA, A` CORPORATION 0F INDIANA.

DRAIN-PIPE.`

Specification of Letters Patent.

Patented Oct. 27, 1914.

Application led February 12, 1912. Serial No. 676,958.

To all whom it may concern:

Be it known that I, Josnrn G. I-IArns, a citizen of the United States,residing at Indianapolis, in the county of Marion and State ofIndiana,have invented certain new and useful Improvements inDrain-Pipes, of which the following is a specification.

My invention relates to drain pipes and its object is to provide meanswhereby a pipe of this class may be tested after the pipe sections havebeen joined and a flooring or pavement laid over the same and to providemeans, cooperating with an expansible plug employed for the purpose ofclosing the pipe to permit the latter to be tested, for enabling a Wornplug `or plugs of different sizes to be etfectively employed to closethe opening of the pipe. j

l/Vith these ends in view, my invention is embodied in preferable formin the construcltion hereinafter' described and illustrated in theaccompanying drawing.

In these drawings, the view shown is a central vertical section throughthe pipe and `the expansible plug used in connection therewith.

According to the usual mode oi constructing and laying` soil pipes andof testing them, the main soil pipe l is laid up to the joint 2. Then aplug consisting oit an expansible member is'inserted in the end of thepipe l so as to close the same and the pipe tested by introducing afluid therein to detect the presence of leaks and then the trapisconnected to the drain pipe section 3 by means ot a suitable permanentjoint.

To effect the foregoing operation, it is obvious that access must be hadto the soil pipe at the joint and to provide for such access the layingof the floor or pavement above the pipe joint must be delayed until thetesting operation can be carried out.

In my invention, means are provided to enable the testing to be carriedout after the joint has been sealed and the flooring or pavement laid,which is eii'ected by providing a plug receiving vertical intake sectionin the drain pipe proper or trap and accessible through its open upperend even after the flooring or pavement` has `been completely laid. Tothis end the drain pipe trap section 3 is provided with a lverticalintake section 4. For the purpose of closing this trap to permit thetesting of the pipe by` the introduction `oi. `fluids or otherwise anexpansible plugc is provided, consisting preferably of a rubber `ringmounted upon a screw-operated metal` expander 6. This plug is adapted tobe inserted in the upper end of the trap and to be forced tightlyagainst the inner wall of the intake section above the seal portion ofthe trap, for the purpose of closing the latter. j

A catch basin is secured to theupper end of the drain pipe and isprovided with a central cylindrical portion adapted to abut against andform a continuation oi' the trap proper.` The catch basnis provided inits upper edge with an annular recessed portion forming a seat for acover.

rlhe upper part of the trap section 1s d1- vided into two verticalportions 7 and 8 of different diameters, the upper section being of thegreater diameter. Projecting interiorly of the trap section at the lowerend of the upper section S is a shoulder 9 against which the expansiblerubber ring constituting the plug is adapted to be forced, and againstwhich the plug abuts for the purpose of providing a tight joint betweenthe tra section and the plug and affording a resistance against whichthe pressure of the expanding member can act to force the ring laterallyagainst the wall oi the trap. The upper end of the intake section isopen and is accessible from above the floor or pavement in which thetran is laid whereby the plug may be readily inserted after the flooringor pavement has been completed and the testing operation thus performedwithout delaying the building operation or without necessitating theremoval of a portion of the floor above the permanent joint at 2 for thepurpose of obtaining a test of the pi es. At the lower end of the smallsection a similar interior shoulder 10 is provided.

`When the plug has become worn so that it will not fit tightly againstthe wall and shoulder of the upper section 7, the plug is passed throughsaid upper section into the lower section and against the lower shoulder10, and is then expanded against the lower shoulder, and thereby a tightclosure may be obtained even with a worn plug, thus avoiding thenecessity of discarding the plug when so worn that it will not tit the`upper section, The double section also permits the employment of plugsvarying slightly in diameter in their original condition.

vlflaving thus described my invention what l claim is,

l. A drain pipe having` a trap provided with a vertical intake sectionwith an open end accessible from above the iiooror pavement under whichvit is laid, said intake section having, an upper portion terminating atits lower end in an interior shoulder and having another portion ofsmaller diameter below said first portion and terniiiiating'in aninterior shoulder, both of said shoulders being intermediate the openintake end and to receive and cooperate with an expansible pipe closingmember for sealing the outer end of said pipe for testing purposes, substantially as described.

2. A drain pipe having a trap provided with a recessed seat for a coverand with a vertical intake section open at its upper end,` 4

to the intake end with a suitable soil pipe,

said vertical intake section composed of tvvo adjoiningverticalcylindrical sections both labove the seal portion of the trap and belovvthe cover seat and of different diameters, the section of smallerdiameter being below the other, each having an interior shoulder at thelower endtliereof against which an eX- pansible plug is adapted to beforced for the purpose of closing' the trap and its com- 'inunicatingpipe at the intake end to permit testing, substantially as described.

the lower end of said intake portion, saidv portions of the intakesection being; adapted f In Witness whereof, l, have hereunto set myhand and seal at Indianapolis, this 2nd day of January, A. D. nineteenhundred and twelve.

Josnrn e. mires. [L a] Witnesses H. P. Doonrr'rnn, RUTH SELIG.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

